Re: coreaudio/quicktime mp3 decoder equivalent?
Re: coreaudio/quicktime mp3 decoder equivalent?
- Subject: Re: coreaudio/quicktime mp3 decoder equivalent?
- From: Hendrik Schreiber <email@hidden>
- Date: Mon, 14 Jul 2008 14:15:06 -0400
Thanks, Bill, I'll check that.
-hendrik
On Jul 14, 2008, at 13:53 , William Stewart wrote:
Its the same decoder in both places.
If you do (on Leopard) afconvert Your/file.mp3 /tmp/file.wav -d
LEI16 -f WAVE -v
then you will have a completely clean MP3 file decoded (this is the
same as the ExtAF version) - if you compare the result of that with
your two current versions, then the one that it is not identical
too is the one that is doing something more to the audio than just
decoding it.
Bill
On Jul 14, 2008, at 7:56 AM, Hendrik Schreiber wrote:
Hi,
got a quick question regarding the CoreAudio and QuickTime mp3
audio decoders.
I'm moving some code from quicktime to coreaudio and have been
testing to make sure things are all correct.
Specifically, I have decoded an mp3 file with QuickTime and
CoreAudio (using ExtAudioFile) and compared the PCM result.
It looks like the results are similar, but not the identical.
So I wonder, whether I am doing something wrong, or whether the
two mp3 decoders really aren't identical.
Thanks,
-hendrik
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